Qhov nruab nrab particle loj ntawm fumed silica yog me me, thiab nws cov cheeb tsam tshwj xeeb yog loj (80 rau 400m2 / g). Nws cov qauv sab hauv yuav luag yog npaj kom zoo dua peb - tus qauv qauv, thiab yuav luag tsis muaj pawg hauv chav dej sab hauv. Yog li ntawd, cov lus ntawm fumed silica muaj qis hygroscopicity thiab muaj zog nto adsorption, uas muaj qhov ua tau zoo heev. Cov roj hmab compound txhawb nqa nrog fumed silica muaj cov khoom tau zoo heev, thiab nws cov khoom siv hluav taws xob, cov hluav taws xob thiab cov cua sov kuj tseem ua tau zoo heev.
Txawm li cas los xij, lub drawback yog tias fumed silica yog kim, nquag ua rau ya thaum ua, thiab tuaj yeem ua rau muaj plua plav {{}} zoo li tawg. Yog li ntawd, kev tiv thaiv roj teeb yuav tsum siv rau hauv cov khoom siv ua.